20031323222100 has 72 divisors (see below), whose sum is σ = 57960142500960. Its totient is φ = 5341423767680.

The previous prime is 20031323222089. The next prime is 20031323222123. The reversal of 20031323222100 is 122232313002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4514986 + ... + 7774814.

It is an arithmetic number, because the mean of its divisors is an integer number (805001979180).

Almost surely, 2^{20031323222100} is an apocalyptic number.

20031323222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20031323222100 is an abundant number, since it is smaller than the sum of its proper divisors (37928819278860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20031323222100 is a wasteful number, since it uses less digits than its factorization.

20031323222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280329 (or 3280322 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20031323222100 its reverse (122232313002), we get a palindrome (20153555535102).

The spelling of 20031323222100 in words is "twenty trillion, thirty-one billion, three hundred twenty-three million, two hundred twenty-two thousand, one hundred".